How to find Namespace(API Reference) for Standard SAP UI5 controls

Hi Everyone,

I'm searching for the standard classavailable for SAP UI5 controls.

Example:      class="sapUiPopupWithPadding"

         class="marginVerticalContent"

         class="sapUiHideOnPhone"

         class="sapUiVisibleOnlyOnPhone"

I searched in SCN & entire SDK but it is not available any where, can anyone suggest where i'll get this Namespace or API reference for these classes.

any suggestions can be praised...

Regards,

Santhosh